<script lang="ts" setup>
import { ref } from 'vue';
import { type RouteLocationMatched, useRoute, useRouter } from 'vue-router';
import { useRouteListener } from '@/hooks/useRouteListener';
import { compile } from 'path-to-regexp';

const route = useRoute();
const router = useRouter();
const { listenerRouteChange } = useRouteListener();

/** 定义响应式数据 breadcrumbs，用于存储面包屑导航信息 */
const breadcrumbs = ref<RouteLocationMatched[]>([]);

/** 获取面包屑导航信息 */
const getBreadcrumb = () => {
	breadcrumbs.value = route.matched.filter((item) => item.meta?.title && item.meta?.breadcrumb !== false);
};

/** 编译路由路径 */
const pathCompile = (path: string) => {
	const toPath = compile(path);
	return toPath(route.params);
};

/** 处理面包屑导航点击事件 */
const handleLink = (item: RouteLocationMatched) => {
	const { redirect, path } = item;
	if (redirect) {
		router.push(redirect as string);
		return;
	}
	router.push(pathCompile(path));
};

/** 监听路由变化，更新面包屑导航信息 */
listenerRouteChange((route) => {
	if (route.path.startsWith('/redirect/')) return;
	getBreadcrumb();
}, true);
</script>

<template>
	<el-breadcrumb>
		<el-breadcrumb-item v-for="(item, index) in breadcrumbs" :key="item.path">
			<span v-if="item.redirect === 'noRedirect' || index === breadcrumbs.length - 1" class="no-redirect">
				{{ item.meta.title }}
			</span>
			<a v-else @click.prevent="handleLink(item)">
				{{ item.meta.title }}
			</a>
		</el-breadcrumb-item>
	</el-breadcrumb>
</template>

<style lang="scss" scoped>
.el-breadcrumb {
	line-height: var(--v3-navigationbar-height);
	.no-redirect {
		color: var(--el-text-color-placeholder);
	}
	a {
		font-weight: normal;
	}
}
</style>
